Add admin features, responsive UI, user reviews, visit stats, and channel-colored markers

- Admin: video management with Google Maps match status, manual restaurant mapping, restaurant remap on name change
- Admin: user management tab with favorites/reviews detail
- Admin: channel deletion fix for IDs with slashes
- Frontend: responsive mobile layout (map top, list bottom, 2-row header)
- Frontend: channel-colored map markers with legend
- Frontend: my reviews list, favorites toggle, visit counter overlay
- Frontend: force light mode for dark theme devices
- Backend: visit tracking (site_visits table), user reviews endpoint
- Backend: bulk transcript/extract streaming, geocode key fixes
- Nginx config for production deployment

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/core/extractor.py

@@ -56,7 +56,7 @@ def _parse_json(raw: str) -> dict | list:
         return json.JSONDecoder(strict=False).decode(raw)
     except json.JSONDecodeError:
         pass
-    # recover truncated array
+    # recover truncated array — extract complete objects one by one
     if raw.lstrip().startswith("["):
         decoder = json.JSONDecoder(strict=False)
         items: list = []
@@ -71,8 +71,19 @@ def _parse_json(raw: str) -> dict | list:
                 items.append(obj)
                 idx = end
             except json.JSONDecodeError:
+                # Try to recover truncated last object by closing braces
+                remainder = raw[idx:]
+                for fix in ["}", "}]", '"}', '"}'  , '"}]', "null}",  "null}]"]:
+                    try:
+                        patched = remainder.rstrip().rstrip(",") + fix
+                        obj = json.loads(patched)
+                        if isinstance(obj, dict) and obj.get("name"):
+                            items.append(obj)
+                    except (json.JSONDecodeError, ValueError):
+                        continue
                 break
         if items:
+            logger.info("Recovered %d restaurants from truncated JSON", len(items))
             return items
     raise ValueError(f"JSON parse failed: {raw[:80]!r}")
 
@@ -104,7 +115,7 @@ _EXTRACT_PROMPT = """\
 JSON 배열:"""
 
 
-def extract_restaurants(title: str, transcript: str) -> tuple[list[dict], str]:
+def extract_restaurants(title: str, transcript: str, custom_prompt: str | None = None) -> tuple[list[dict], str]:
     """Extract restaurant info from a video transcript using LLM.
 
     Returns (list of restaurant dicts, raw LLM response text).
@@ -113,10 +124,11 @@ def extract_restaurants(title: str, transcript: str) -> tuple[list[dict], str]:
     if len(transcript) > 8000:
         transcript = transcript[:7000] + "\n...(중략)...\n" + transcript[-1000:]
 
-    prompt = _EXTRACT_PROMPT.format(title=title, transcript=transcript)
+    template = custom_prompt if custom_prompt else _EXTRACT_PROMPT
+    prompt = template.format(title=title, transcript=transcript)
 
     try:
-        raw = _llm(prompt, max_tokens=4096)
+        raw = _llm(prompt, max_tokens=8192)
         result = _parse_json(raw)
         if isinstance(result, list):
             return result, raw